中国况报告恰当的

SHIJIAZHUANG SHENTONG PLASTIC INDUSTRY CO.LTD china ppr fitting Size(mm):20*1/2-63*2 Pressure:PN2.5 Brand:Fosite,if you need,we will not put our logo on it INSTALL IMPORTANT POINTS The connection of pipe and fittings is hot melt.Flange is used to connect the steel pipe.During hot melt connection use welding machine.The quality of welding machine must be guaranteed.To make sure the quality of connection.The portable welding machine applied to the final connection of the pipe and system of dn<63mm.The desk-mounted welding machine applied to the preframe connection of the pipe of dn75-160mm.During heating and peg graft,we can’t move the pipe and fittings.We should insert them directly.Welding technical parametersOD(mm) Welding depth(mm) Welding time(s) Insert time(s) Cooling time(min) 20 14 5 4 2 25 15 6 4 2 32 16.5 8 6 4 40 18 12 6 4 50 20 18 6 4 63 24 24 8 6 75 26 30 10 8 90 32 40 10 8 110 38.5 50 15 10 160 55 80 30 20 TIP: The welding time should delay 50% if the working temperature below 5 °C。 5.After the pressure testing we can close the pipe and use.